Relevant concepts of the Groovy language
When I said that I was going to explain to you my way of understanding things, I was very serious, the truth is that it is not very easy for me to make great descriptions and that is why I will try to put as many images as possible to exemplify everything that I want to make you understand.
A bit of Syntax
There are some considerations that we must take into account, as you may have noticed in the previous
example, the use of ( ) for a method and and the ; to end a line they are not necessary,
we have not created any class to execute these instructions and where is the main?,
the main is not necessary in a Groovy application of course, to make our code more readable we can
use them as follows .
Hey! Wait… is that Java code? Let’s remember that Groovy is a programming language based on Java, so let’s remember that with some exceptions, Java codes are also valid to be executed in Groovy, of course the idea is to use the characteristics of Groovy to make life easier, but if it exists something we don’t know how to do in groovy, we can always insert Java code anywhere in the script where we need it.
Before continuing, let’s pay attention to the aforementioned codes, note that a string can be defined by single quotes or quotes without any type of error, everything has a reason, but we will see that later.
Groovy’s Truth
When we make an application in Java, to evaluate a condition we require that it return a value true
or false (there is no other) Groovy goes further by extending the possibilities according to the
following table and to the next example.
Groovy Truth Table
Example in the Groovy Console
Wait a minute again… where did the data types go? As you can see, defining a data type is a thing of the past, although as I mentioned before, they may or may not be defined, depending on the programming style used, the type of script that is being carried out; there will be times when defining a data type will be necessary, but we will see that in our next post.
Doubts, comments or contributions are welcome, have a great weekend and see you next time.